HTTP Header Mangler

HTTP Header Mangler

HTTP Header Mangler inserts HTTP headers on a per host basis.

What is HTTP Header Mangler?
HTTP Header Mangler is a Firefox add-on which inserts HTTP headers on a per host basis. Matching of hosts is done with either simple strings or regular expressions. Rules can have multiple headers apply to multiple hosts, or simply insert a single header for a single host.
Stats
Users: 206 ▲ 5
Rating: 4.14 (7)
Version: 1.1.3 (Last updated: 2018-04-27)
Creation date: 2014-04-04
Weekly download count: 3
Firefox on Android: Yes
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • storage
  • webRequest
  • webRequestBlocking
  • <all_urls>
Size: 7.71K
URLs: Website
Stats date:

Other platforms

Not available on Chrome
Not available on Edge
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Summary

HTTP Header Mangler is a Firefox add-on which inserts HTTP headers on a per host basis.

Matching of hosts is done with either simple strings or regular expressions.

Rules can have multiple headers apply to multiple hosts, or simply insert a single header for a single host.

Example rules: example​.com .*regexp\d+ # This is a comment. X-Forwarded-For=10.11.12.13

# Delete headers using "" or ''. X-Forwarded-For="" X-Forwarded-For=''

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User reviews
The idea is great. Produces no effects on Firefox 124. I've tried to remove content-security-policy header with it.
by Vasili Gulevich, 2024-04-05

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by GanJingWorld, 2022-12-23
View all user reviews
Safety
Risk impact

HTTP Header Mangler is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install HTTP Header Mangler if you trust the publisher.

Risk likelihood

HTTP Header Mangler has earned a fairly good reputation and likely can be trusted.

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